Why does man need the vastness?

Why does man need the vastness? Why does he become aggressive when he has to be too close to too many people? It is his ego that feels too much separation in too much closeness. All are individual, no other ego is like himself. All others produce in it the pain of separateness, of lost unity that cannot be regained. If it has more space, it has more space for itself. It has an area where everything can be united on it. There it can rest in its unity with itself. In its solitude.